<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			
		console.log(({}+{}).length)
		console.log(([]+[]).length)
		console.log((function(){}).length)
		a = [1,2,3].map(parseInt)
		
		console.log(a)
		</script>
		
	</body>
</html>
